You can buy cheap brand clothes, socks, bags, fruits and vegetables, bread, cheese, gözleme, simit, boyoz etc. You can buy the same clothes which you see in shops for cheaper price. Fruits and vegetables are fresh and cheaper than supermarkets. I think it's one of the best ways to see Turkish culture.
If you want to buy clothes, it is better to go there in the morning. But for fruits and vegetables go in the afternoon because they get cheaper.
We: 07:00-21:00